Wow, calculating this would be harder then doing my taxes.
I'd have to add this detail to all 600+ cultivars in my data base first and then I could calculate it. I would estimate that my largest percentages would fall to the Selfs, Blends and Omoenas. Then I have a lot of plicatas, and Emma Cooks. A few luminatas and broken colors. But this is just a rough estimate, not real data.